//if tx.value < tx.basefee * 200:
    // If not enough gas, stop
//    stop

// If data was provided, it won't overwrite the code, and the artwork is unregistered
if msg.datasize == 1 and msg.data[0] > 1000 and contract.storage[msg.data[0]] == 0:
    // Set the owner to be the sender
    contract.storage[msg.data[0]] = msg.sender
    return(1)
else:
    // Do nothing
    return(0)